| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T79 |
0-245 |
Sentence |
denotes |
The binding of the virus to the ACE2 receptor causes stabilization of the RBD in the standing-up state and triggers conformational changes in the S complex, resulting in the release of the S1 subunit and activation of S2 fusogenic activity (55). |
| T80 |
246-408 |
Sentence |
denotes |
The S2 subunit contains an N-terminal fusion peptide (FP), heptad repeat 1 (HR1), heptad repeat 2 (HR2), a transmembrane region (TM), and a cytoplasmic tail (CT). |
| T81 |
409-681 |
Sentence |
denotes |
During the fusion process, the FP portion is exposed and inserts into the membrane of the target cell, leading to a modification in S2, then the HR1 and HR2 come together to form a six-helical bundle (6-HR) structure, which allows the fusion between the membranes (55–57). |
